What Is the Difference Between Semi-Infinite and Infinite Wires?

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Infinite wires extend infinitely in both directions, while semi-infinite wires have one fixed endpoint and extend infinitely in one direction. The distinction is crucial in physics, particularly in magnetic field calculations. An infinite wire creates a uniform magnetic field around it, while a semi-infinite wire generates a magnetic field that varies based on its fixed endpoint. Understanding these differences is essential for accurately applying concepts in electromagnetism. This clarification aids in grasping the implications of wire configurations in magnetic field studies.
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I am studying magnetic field and I could not distinguish the difference of semi-infinite and infinite wire. Can someone please explain briefly the difference of these two? Thank you.
 
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I would imagine an infinite wire would run from -infinity to +infinity.
A semi infinite wire would be from some value to +/- infinity.
 
infinite means no end on both sides semi infinite means which is fixed at one point and other point is not fixed eg line infinite and ray semi infinite
 

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